[SOLVED] GPU Passthrough while preserving console

[BiTRiP]

Hi,

I have a server running using onboard Intel GPU for bios etc.
Also, I have a GTX750 pci-e card inserted that should ONLY be used by one VM and totally separated from host.

I have the card working in the VM using the pci-e GPU with the following line in grub loader:

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction nofb nomodeset video=vesafb:off video=efifb:off

Problem now is that the console on the monitor that is connected to the internal GPU blacks out after loading proxmox. How can I preserve console so that the pci-e is totally bypassed and only used in VM?

Hope you can help.

 

[leesteken]

Make sure to boot from the onboard integrated graphics. Sometimes the BIOS needs a monitor plugged in to the onboard graphics to make this work.

Don't use nofb nomodeset video=vesafb:off video=efifb:off to disable all display output but bind your GPU to vfio-pci (so nothing touches it) using vfio_pci.ids=xxxx:yyyy,aaaa:bbbb where xxxx:yyyy and aaaa:bbbb can be found for your GPU with lspci -ns XX:YY where XX:YY.0 is the PCI ID of your GTX 750 and XX:YY.1 is the PCI ID of the audio device of that GPU.

Or do the binding to vfio_pci in /etc/modprobe.d, which might require a softdep to make vfio-pci load before nouveau. Or maybe just blacklist nouveau and snd_hda_intel to prevent those drivers from touching the GTX 750. Or maybe the GTX 750 works regardless, just don't disable all video output as you are doing now.

 

[BiTRiP]

You're awesome! Works like a charm. Dank je wel ;-)